Introduction
Due to the vast array of computer types, controllers, device configurations, and software utilities in use within small business systems, it is impossible to give specific installation instructions for each computer type in which the drive may be installed. There is no generic installation description that would apply in all cases.
Instead, this section presents basic principles for installing the M2266S/H disk drive into the most frequently used system: an IBM Personal Computer or PC-clone, using the PC DOS or MS DOS operating system.
Preparation of the Hard Disk for DOS Applications Definition of Drive Type
First define the hard drive as "zero",or, "not installed".
Basic Steps for Software Installation
Software installation on the M2266S/H drive involves partitioning, and high-level formatting. It requires the following steps:
Step 1: Boot DOS, and then run the DEBUG program. At the DEBUG prompt (" - "), type g=c800:5 to access the BIOS-level formatter.
(Note: The manufacturer of the controller may specify a different segment and offset location to access the low-level formatter, or may provide standalone installation software.)
Drive Partitioning
With a DOS version of 3.3 or lower, the maximum drive capacity is 32 MB.
Therefore, multiple drive partitions (C:, D:, E:, ... Z:) of 32 MB or less must be created. (See step 3 beloW.) Definition of larger partition size requires either DOS 4.0x or a third-party software package such as Disk Manager®
from Ontrack Systems, Inc.
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Step 2: Run the software to create the partitions required by your unique configuration. (This software is either the FDISK program or one of the third-party software packages mentioned above.) Then boot the system again to save the partitions.
Step 3: To perform high-level (or DOS-level) formatting of the partitions, use the DOS FORMAT command or follow the on-screen instructions for a third-party software package. If using the FORMAT command, enter it at the A: prompt as follows:
FORMAT d:/s
where d is the drive letter (typically C) assigned by DOS to the hard drive. The Is flag automatically copies the system files required to boot the system from the hard drive.
The flow chart on the following page summarizes the steps for partitioning the drive and preparing the drive to receive data.
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Partitioning and High-Level Formatting
Use Compaq DOS 3.31 or MS/PC DOS 4.00 or
Fujitsu America, Inc.
Reboot the System to write
the partition table on the
disk
Format the Partitions. Use
/S Option on Boot Partition.
ransfer System files on Boot
Drive or Partition
Use Host Adapter Mfr's Standalone
Software or Disk Manager 4.0 and Above.
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Section 5. Specifications
This section describes the functional and environmental specifications of the M2266S/H disk drives.
Table 5.1 Drive Functional Specifications (1 of 2) Specifications
Items M2266
Unformatted capacity of the
drive (*1) 1266MB Unformatted Capacity / Track (*1)
Recording Code I/7RLL
Recording Density 46,635 BPI
Track Density 1,634 TPI
5.7 in (146 mm) x 3.3 in. (83 mm) x 8.0 in (203 mm)
S C S I
TEMPWR
SIGNAL (Inserted in a socket)
TERMPWR setting mode Power supply to terminal resistor circuit on tDD Power is supplied from both /DO and TERMPWR pin (0) Power is supplied from /DO only (TERMPWR Pin is not used) Power is supplied from TERMPWR pin only
(100 power supply is not used)
o The TERMPWR pin is also supplied with power from /DO.
Figure 2.12 Supplying Power to the Terminating Resistor
Connectors
Connectors and terminals for connection to the outside are installed on the 100. Their positions are shown in Figures 2.13 and 2.14.
• Power supply connector
• SCSI connector
• SG (signal ground) connector
• Connector for external operator panel
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SG terminal
SCSI connector (eN 1)
Setting terminal (eNg) (E:lternal operator panel connector)
Setting terminal (CN3.
(EJ:ternal operator panel connector)
Figure 2.13 Positions of M2266S Connectors
2-12 (External operator panel connector)
connector
Selling terminal CeN3)
Red/write
(External operator panel connector)
Figure 2.14 Positions of M2266H Connectors
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Power Supply Connector
Figure 2.15 shows the shape and pin configuration of the DC power supply connector.
(M226xSI
~ro
~ G~]~ ro
+12VDC~ + 12 VUC Return (GND) G + 5 VDC Return (GND)
(M226xHI ~ +5VDC
[ro
~ G• JII
Figure 2.15 Power Supply Connector
SCSI Connector
The connector for the SCSI bus is an unshielded standard connector which has two rows of 25 pins spaced 2.54 mm (0.1 inch) apart. Figure 2.16 shows several views of the connector and gives the physical specifications. See Table 6.3 for the signal assignments on the connector for the single-ended type SCSI bus (M2266S) and the differential-type bus (M2266H).
IM2.:Z6~IIJ
~- .. -... J
pm---L.oO'
jI::::::::::::::::J:::;":i} : ;=====~~j=P ~" "*,ih' 11
Pin I -11-1)2 III ___ II_X ",,., 49
~
Symbol nm Inches Remarks
01 2.54 0.1
02 2.54 0.1
03 4.19 +102 0.165 +0.04
-0.25 -0.01
04 6.09 0.24
Figure 2.16 SCSI Connector
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SG Terminal
For DC ground, an SG terminal (Fastin-Faston tab) is mounted as shown in Figure 2.17.
Note: This figure shows the M2266S Figure 2.17 SG Terminal
Connectors for External Operator Panel
Two types of connectors for the external operator panel are provided on the 100 as shown in Figure 2.18. They allow connection of an external write protect switch, an LEO on the front panel, and an SCSI 10 setting switch. For the recommended circuit of the external operator panel, see Figure 2.21.
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Pin 13 (CN9) (CN3)
In M2266H, the setting lenninal (CNH4) exists between CN9 and CN3,
connector for internal connection.
Only pins 01 to 04 are used for connection of the opera Lor panel.
2.54mm
Figure 2.18 External Operator Panel Connector
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Notes:
1. Some signals are assigned on both pins CN3 and CN9.
2. When no external operator panel is connected to the IDD, CN3 and CN9 are used for setting the terminal of the SCSI ID, etc. (see "Setting Terminals" in section 3) When the IDD is shipped from the factory, the short plugs are mounted between all even numbered and odd numbered pins of CN9 and no short plug is mounted on CN3.
3. When the external operator panel is connected to CN3 or CN9, pay attention to the following items.
• CN3 and CN9 are physically interchangeable. The external operator panel can be connected to either one.
• When the external operator panel is connected to CN9, all short plugs on CN9 must be removed. However, pins on CN3 corresponding to the signal set on the external operator panel must be opened. When there is a signal not set on the external operator panel, the state of that signal must be set on CN3 using the short plug. The removed short plug from CN9 can be used for setting the state.
• When the external operator panel is connected to CN3, the short plug on CN9 corresponding to the signal set on the external operator panel must be removed. When there is a signal not set on the external operator panel, the state of that signal must be set on CN9 using the short plug.
Connection Requirements
This section discusses the connections required when installing the drive.
SCSI Cable
All SCSI devices on one bus are daisy-chained with an SCSI cable. A terminating resistor must be mounted in the SCSI device at each end of the SCSI cable.
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Since an SCSI terminating resistor module is mounted in the 100 on shipment, it must be removed when the 100 is not connected at either end of the SCSI cable. Also, a method for supplying power to the terminating resistor must be selected with the setting terminal on the 100. For further details, see "Setting Terminals" in section 3.
The maximum number of SCSI devices that can be connected to the SCSI bus is 8, including the host adaptor, IDO, and other SCSI equipment.
The connector socket for the SCSI cable must be an unshielded 50-contact socket which has two rows of 25 contacts spaced at 2.54 mm (0.1 inch) apart.
It should also have a key way to prevent insertion in the wrong direction (bump type connector). (See Figure 2.16).
--- ~·r "'
Note: Tnt: Lolerance is ± 0.127 mm (0.005 inch) unless olherwise specified.
Figure 2.19 SCSI Cable Connector
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The maximum length of the SCSI cable is as follows. If more than one SCSI device is connected, the total cable length must not exceed the following:
• 6 m for single-ended type SCSI
• 25 m for differential type SCSI
The use of a 25-pair twisted cable satisfying the following requirements is recommended.
Single-Ended Type
Conductor Size: 28 A WG (American Wire Guage) or bigger Characteristics impedance: 100 to 132
n
Differential Type
Conductor Size: 28 A WG or bigger Characteristic impedance: 100 to 122
n
Each pair of wires in the 25-pair twisted cable must be connected to pins n and n+ 1 (where n is an odd number) on the interface connector. Cables having an identical impedance must be used on the same SCSI bus to reduce signal reflection and maintain transmission characteristics.
When an SCSI device is connected to the SCSI cable (except at either end of the cable), connection to the SCSI connector must be at a branch point of the cable. If an SCSI device is connected to one end of the SCSI bus, no cable should be connected after the last SCSI device, except when the cable has a terminating resistor. (See Figure 2.20.)
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(A) Connection to a Middle Point of the Cable.
Correct connection (1) Correct connection (2) Incorrect connection SCSI cable SCSI cable
(8) SCSI Cable Termination
Correct connection (1) Correct connection (2) Incorrect connection
SCSI cable
TRM: SCSI terminating resistor
Figure 2.20 Connection of SCSI Cable
Power Cable
The IDDs must be star-connected to the DC power supply in a one-to-one connection to reduce the influence of load variations.
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DC Ground
A DC ground cable mayor may be installed depending on the system requirements (system installation environment, cabinet structure, power supply system). This cable is generally connected to the ground of the power supply unit. Connection between more than one IDD may be in a daisy chain.
External Operator Panel
The external operator panel is installed only when required for the system.
If it is unnecessary, pins 1 to 4 of CN7 connector for the external operator panel on the IDD must be opened. Also, necessary features must be set on CN3 or CN9 using the short plug. (See "Setting Terminals" in section 3.) Figure 2.21 shows a recommended circuit for the external operator panel.
Since the external operator panel is not provided as an option, the user must fabricate this panel, referring to the recommendation if necessary.
Note:
2-20
Necessary switches and LEDs for the system can be provided on the external operator panel by referring to the recommended circuit shown in Figure 2.21.
When there is no signal set for the external operator panel, the Signal must be set on CN3 (or on CN9) using the short plug. The CN3 or CN9 pins corresponding to the signal must be opened. For details, see
"Connectors" in this section and "Setting Terminals" in section 3.
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(lDO)
Figure. 2.21 Example of External Operator Panel Circuit
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Environmental Requirements
The IDD must conform to the environmental requirements listed in section 5. When the IDD is operating, the ambient temperature measured 3 cm from the disk enclosure (DE) surface and from the peA surface must satisfy the specified requirement. At the DE surface during operation, the contact temperature at the measurement point shown in Figure 2.22 must satisfy the specified requirement.
Measurement point (Rear·center orOE)
Figure 2.22 DE Surface Temperature Measurement Point
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